One Cubic Foot Bag. Birm is used to remove dissolved iron and manganese. The pH must be above 6.8 and dissolved oxygen content must be equal to 15% of the iron and manganese content. No regeneration is required, only periodic backwashing
ALSO 9" x 48" tanks = 1.0 cu.ft. plus gravel
INSTRUCTIONS - Replacing MEDIA ( Carbon, Greensand, Birm, Calcite, etc ),
see: Other MEDIA replacement GUIDE
10" x 54" tanks = 1.5 cu.ft. plus gravel.
** See Product Specification / Application sheet for BIRM.